Kusiyana Pakati pa Direct Current ndi Alternating Current Drilling Rig Electric Drive System
Makina owongolera magetsi a petroleum nthawi zambiri amagawidwa m'magulu awiri, limodzi ndi zida za DC (Direct Current), zomwe zimagwiritsidwa ntchito poyendetsa galimoto ya DC, kungoti SCR(silicon control rectifier) mwachidule. China ndi AC (Alternating Current) zida, zomwe zimagwiritsa ntchito kuyendetsa ...
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